hodgman



(No Model.) y Y 2 Sheets-Sheet 1. s. A, HODGMAN.

, GALENDBRING ROLLS. No. 387,879. Patented Aug. 14, 1888..

i o 'am' \w y N. PETERS. Pnatuthugnpmr. washington. 0.6.

2 Sheets-Sheet 2.

(No Model.)

S. A. HODGMAN.

GALENDBRING ROLLS.

No. 887,879. Patented Aug. 14,1888.

N. PEIEHS, Phmn-Limognphur, wnningum, u c.

ifhviTnn STATES PATENT Ormes.

STTLMAN A. HODGMAN, OF VLMNGTON, DELAVARE, ASSIG-NOR TO THE LOBDEL'L CAR VHEEL COMPANY, OF SAME PLAGE.

CALENDERINGWROLLS.

SPECIFIGATON forming part of Letters Patent No, 387,879, dated August 14, 1888.

Application filed November 21,1887. Serial No. 255,785. (No model.)

To (LZZ whom. t may concern..-

Be it known that l, S'rrmnuv A. HODGMAN, o. citizen ol' the United States, and a resident of Vilmington, New Castle county, Delaware, have invented certain improvements in Calendering'ltolls, ol' which the followingis aspecilication.

The object of my invention is so to construct the frames or housings l'or holding,` rolls for io caleudering paper or for other purposes that any one ol' the rolls can be removed Without disturbing` the remainder oi' theserics, as fully described hereinafter.

In the aeeompanying,` drawings, Figure is i5 an end view of my improved housing with a stack of rolls for ealemlering` purposes. Fig. 2 is a side view with. one ofthe side frames in section on lilielline l 2, Fig. l; and Fig. 3 is a sectional plan view of one end frame on the zo line 8 4, Fig. l, part of the roll being` shown in elevation.

A A are the side frames or housings, each having an extension, A', at the base, which has a bed, n, and on the latter is supported one of the bcaringblocks B of thelower calenderingroll, D, the ends d of which are reduced for adaptation to these blocks. The blocks B have lips b I, which overlap the bed e and tend to keep the boaringbloeks in line, and screw-bolts 3o epass up through the bed and into the bearing-bloek, thereby 'firmly securing the block to the bed.

in the face of cach frame or housing A is a groove, o, extending from the top of the frame 55 to the recess formed for the reception of the bearing-block of the lower roll, D, this groove being undercut or enlarged at the base, as shown in Fig. 3, for the reception of the heads fof a series of bolts, F, which secure in their 4.o proper places each of several boxes G, forming bearings for the npper rolls 1, 2, 3, 4, 5, and G. The boxes G are held in place by short plates I-I, extending from one bolt F to another, recesses being formed in the opposite ends ofthe plates for the reception of the bolts F. The bolts F are secured to the frame by means of a nut, j",- and a sleeve, g, on each of the bolts acts asa collar and limits the inward movement of the plates H, `which are acted on by 5o unisg on the bolts F; or the boxes can be held in position by long,` plates,through which the bolts pass, and when the plates are re moved for the purpose of removing one or more of the rolls the boxes of the remainder of the series can be held in place by means of temporary bolts or clamps.

The calender-rolls rest upon one another; henceit will be seen that so far as regards vertical bearing the rollers support the boxes, the latter, however, serving to retain the rolls in 6o a vertical line.

At each end of the machine a lever, I, pivoted at il to the upper plate, H, bears upon the top boX,G,said lever being connected byarod, i', to a lever, J, pivoted to the frame atj, and 65 is provided with a suitable weight, J, whereby more or less pressure is imparted to the rolls. Suitable bolts, F', pass through the top of each frame A and secure the upper plates, H, to the frames.

In a stack of calender-rolls the lower roll, D, is the prime mover, being connected to the drivingshaft K through the medium of a clutch, M, governed by a suitable hand-Wheel, m, and I prefer to provide the center roll with a hand-Wheel, n, by means of which it can be rotated when circumstances require it. To remove any one of the rolls-say, for instance, the lower roll-I remove the screw-bolts oc and move the rollD,with its bearing-blocks B, out Se on their beds a until the roll is clear of the frame, first, however, taking off the Weight of the roll that is above it by means of wedges or blocks w, driven between the boxes G and the bolts F, as shown by dotted lines in Figs. 1 and 2. Tackle is then attached to the roll, which is thus removed from the front of the machine without disturbing the remaining rolls.

By withdrawing the rolls from the front of 9o the machine, instead of endwise, the rolls are not liable to be scratched in removing them. The rolls can be replaced in the same manner.

If one of the upper rolls is to be removed, the Weight is taken off the boxes of the roll by Wedges or blocks w, placed between the boxes G and boils F of the roll above, the nuts g', being then unscrewed from the bolts, securing the plates H, which retain the bearing-boxes G of the roll to be removed. The roll, with its bearico ing-boxes, can then be Withdrawn from the front of the machine and taken away, and, if

necessary, can be repaired or a' n'vif' one sub stituted.

I claim as my inventionV y 1. The combination, in a calendering or like 5 machine, ofthe fixed frames or housings, the

15 said beds being of such length as to allow the roll to be moved outward until it is clear of the upper rolls, all substantially as described. 3. The combination ofthe vertically-grooved frames or housings, the series of upper calen- Qc dering-rolls and boxes therefor, plates confinsans@ ing said boxes to the frames or housings, and bolts having heads adapted to the grooves of the frames or housings, and nuts for securing the confining-plates, all substantially as described.

.4. The combination, in a calendering or like machine, of the vertical frames or housings, the upper series of rolls, retaining-plates therefor, confining-bolts located between the journals of the rolls, and bearing-boxes having on their under sides atteued faces for the action of lifting-wedges, all substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

STILM AN A. HODGMAN.

YVitnesses: g

WILLIAM D. CONNER, HARRY SMITH. 

